Hose nozzle



A..c. LUSHER ET AL 1,741

HOSE NOZZLE June 21, 1938.

Filed April 3, 1937 I'll II 2e 54 13 MA 32 0 INVENTORS Albert CLusher aH 7 BY D0naldL.5 ender Patented June 21, 1938 UNlTED STATES PATENTOFFIQE HOSE NOZZLE of Connecticut Application April 3, 1937, Serial No.134,779

6 Claims.

This invention relates to hose nozzles, and particularly to animprovement in that class of nozzles adapted to produce both a fine andcoarse spray or a solid stream of water.

The principal object of this invention is to produce a hose nozzlehaving an improved and effective sealing construction between theadjustable members of the nozzle to prevent any leakage. 1

Another object is to provide a hose nozzle wherein the joint between thestationary and rotary part is placed relatively near the center of thecomplete nozzle to facilitate the gripping and manual adjustment of thesame.

A still further object is to provide an efiective shut-off valveconstruction adjacent the terminal end of the nozzle.

With these general objects in view, 1e invention consists of features,combinations, details, construction and arrangement of parts, which willfirst be described in connection with the accompanying drawing and thefollowing specification.

In the drawing:

Fig. l is a side elevation view of the nozzle construction.

Fig. 2 is a longitudinal sectional view of the same on an enlargedscale, embodying the principles of the invention, and showing theadjustable nozzle end in its closed, shut-off position.

Fig. 3 is a fragmentary sectional view of the end of the nozzle, showingthe adjustable end of the nozzle in open position.

Fig. 4 is a fragmentary sectional view of the inner end of theadjustable member showing the construction of the open end of thecomponent sleeve prior its assembly.

Fig. 5 is a separated View of the several members that comprise thesealing unit for the nozzle.

Fig. 6 is a fragmentary longitudinal sectional view of the centralportion of the nozzle, showing a modified construction.

Fig. 7 is a sectional View of the forward end of the body member showinga still further modified construction.

Referring now in detail to the several figures, the numeral I0designates generally the hollow body member of the device, having itsenlarged rear end provided with an internal thread I I for attachment tothe conventional threaded member usually found on end of hose. end ofthe body member III is provided with a projecting reduced cylindricalsleeve neck I2 to which is attached a hollow stem member I3 in a mannerto be more specifically described later.

The toward The intermediate portion of the stem member I3 is providedwith an enlarged threaded section I4, capacitated to adjustably receivethe threaded section I5a of an adjustable nozzle end I5.

The central hollow portion of the stem member I3 defines a suitableliquid conduit I6, the forward end of which is intercepted by atransverse opening I'I, leading into a cylindrical chamber I8, formed atthe intermediate portion of the adjustable nozzle end I5 ahead of thethreaded section I5a. The end of the stem aheadof the transverse openingI1 is constructed with a conic section I9 which terminates in aprojecting integral spray disseminating pen 20.

The cylindrical chamber I8 of the nozzle end I5 connects with arestricted discharge orifice 2| by means of an intermediate conic shapedreduction section 22. As best shown in Fig; 2, the angle of the conicsection 22, with respect to the longitudinal axis of the nozzle ispreferably greater than the angle of the conic section I9 on the end ofthe stem member I3, thus creating a line contact valve seat between thestem I3 and the nozzle end I5 to assure a perfectly tight liquid proofvalve seal between the parts, when the nozzle end is screwed up to itsclosed position.

In order to provide for a liquid tight seal between the relative movablesections of the nozzle, the adjustable nozzle end I5 is constructed witha rearwardly extending cylindrical sleeve portion 23, which normallysurrounds the reduced cylindrical neck I2 of the body member ID inspaced relation thereto and is adapted to receive a sealing unitcomprising a reinforcing washer 24, a spring spreader member 25, afibrous cupped washer 26, which, in this particular instance is made ofleather, a relatively heavy seating washer 21, and a small fibroussealing washer 28. All these parts, being positioned in the order asshown in Fig. 5, are provided with central apertures to permit assemblyin place in a compact position over the reduced unthreaded interior end29 of the stem It. The foremost member of the sealing unit which is thereinforcing washer 24, is adapted to abut against a stop shoulder 30,provided at the juncture between the enlarged threaded section I4, andthe reduced interior end 29 of the stem I6. When all the elements, 24,25, 26, 21, and 28, as shown in Fig. 5 which comprises the sealing unit,are assembled upon the reduced end 29 of the stem It in a compactposition, as shown in Fig. 2, said reduced end 29 is then telescopicallyassembled into the interior of the cylindrical neck portion I2 of thebody ID, by a drive fit, compressing all said elements of the sealingunit tightly together between the annular end of the reduced cylindricalneck [2 and the stop shoulder 30 of the stem. The inner end of thereduced section 29 of the stem I3 is provided with an interior beveledsection 29a, a portion of which initially is adapted to extend beyond ashoulder 3| defined between the adjacent end of the body l8 and thereduced cylindrical neck 52. This construction is shown by dottedoutline in Fig. 2. Subsequently the stern I3 is made permanently secureto the body by forming over the relatively weakened interior end 29a ofthe stem I3 against the inside shoulder 3| by an upsetting operation.

Before the assembly of the adjustable nozzle end 15 to the hollow stemmember l3, the open end of the sleeve portion 23 of said nozzle end [5is provided with an interior bevel 32 to facilitate assembly of thesleeve portion 23 over the elements of sealing unit, particularly as itengages with the forward end of the cupped washer 26. After the assemblyof the nozzle end E5 to the stem E3, the end of the sleeve portion 23,which is naturally more or less weakened by the beveled end 32, is spun,or otherwise formed inwardly to define an inturned stop rim 33. Thisstop rim 33 will engage against the seating washer 277 when the nozzleend I5 is at its extreme advanced position to prevent completedisassembly of'the latter from the body 10 of the nozzle unit.

The purposes and functions of each of the members 24 to 28 inclusive, ofthe sealing unit, are as follows:

The small fibrous sealing washer 28 is embraced between the annular endof the reduced cylindrical neck l2 of the body ill and the adjacentseating washer 21, and serves to prevent any leakage of fluid betweenthe seating washer 21 and the reduced cylindrical neck H2, in case anyliquid should perchance seep forwardly between the connecting joint ofthe unthreaded interior end 29 of the stem I3 and the cylindrical neckE2. The seating washer 2'8 has an outside diameter adapted to have afree sliding fit within the interior diameter of the sleeve 23, andserves as a support or seat for the base portion 26a of the cuppedwasher 26. The forward end of the cupped washer 26 is provided with abeveled section 26b to create a feather edge 260 which, under anypressure of water seeping back through the threaded connection of thestem l3 and the nozzle end IE, will tend to initially force the featheredge 26c outwardly against the adjacent surface of the sleeve 23, andprogressively increase the pressure of the side walls of said cuppedwasher outwardly against the sleeve portion 23 in ratio to the backpressure of the water.

From practice and experimentation, it has been found that a leathercupped washer, when subjected to long periods of non-use, is liable todry, and more or less shrivel up, pulling away from the adjacent wall ofthe sleeve. Also, an unsupported cupped washer is liable to buckle whenturning the nozzle end 5 for adjustment purposes, and break the sealbetween the movable parts. In order to overcome these faults, provisionis made of a spring-fingered spreader member 25, which consists of abase ring 25a, having a series of upstanding resilient fingers 2527slightly spaced relative to each other and slightly inclined outwardly,relative to the axis of the spring member. These fingers are adapted topress outwardly against the interior wall of the cupped washer 2B andsupport the same at all times, and prevent any collapse of said wallunder all conditions. The

reinforcing washer 24, previously mentioned, is seated within the cuppedpart of the spreader member 25 and serves to prevent the spring fingers2511 from being distorted inwardly from their normal position, due toany excessive pressure that would otherwise be placed upon the ring part2511 of the spreader member 25 by the compressive forces between thestop shoulder 30 and the annular end of the reduced cylindrical neck l2coincident with the assembly of the stern I3 to the body ID in theabsence of said reinforcing washer 24.

As pointed out, one of the features of this nozzle is to have the jointbetween the relatively movable parts substantially near the center ofthe nozzle unit. This is produced by having the forward portion of thebody member Ill adjacent the threaded section produced with a relativelylong tapering shank Illa, having a series of external longitudinalflutes lllb defining an equal number of upstanding ridges lllctherebetween, which serve as a gripping medium for the nozzle. Theintermediate portion of the adjustable nozzle end i5 is also providedwith a series of knurled rings lEa, three in this instance for the samepurpose. The particular advantage of this construction of having arelatively long gripping shank Illa on the body member Iii, is that itprovides for a better hold for the operator then hithertofore wherethere was only a very small portion of the body member exposed forgripping purposes and which would have a tendency to have the nozzletwist oif from the hose connection when effecting the adjustment of thenozzle end.

In Fig. 6, there is shown a modified construction of the nozzle, whereinthe inner end of the sleeve neck 92 of the body H3 is provided with anintegral outwardly formed flange I20, which serves as a seat for thecupped leather washer 26. By this construction, the seating washer 21and the small fibrous washer 28 are omitted. If, perchance, any seepageof water is forced forwardly through the joint between the reducedsection 29 and the neck 8 2, it will be sealed by the base part 26a ofthe cupped washer 255. In this modified construction, in order toprevent the disassembly of the adjustable nozzle end from the hosenozzle unit, the beveled end 32 of the skirt portion 23 is provided witha plurality of inwardly formed lugs that are sheared out of the face ofthe beveled section and are adapted to engage against the fiange portioniZa as a stop, when the nozzle end is in its foremost position.

In Fig. 7, there is a further modified construction shown wherein thewasher member 21a is permanently secured directly to the end of thecylindrical neck i2 of the body H) as, for example, by means of a ringof solder 211). This construction obviously eliminates the use of thesmall fibrous washer 28 and the liquid seal will be effected by the baseend 26a of the cupped washer 26 engaging against the washer 21a.

While this invention has been shown and described in several forms, itwill be understood that other changes and variations may be made in thespecification and constructions shown and described without departingthe scope of the invention as defined in the appended'claims.

What is claimed is:

1. In a hose nozzle, a body member, a stem .r'nember carried by saidbody member, a nozzle end having axial adjustable engagement with saidstem member, said nozzle end having a skirt member surrounding and inspaced relation to the connecting portions of said body and stem member,and a sealing unit carried by one of said members and engaging with saidsleeve to effect a liquid seal therebetween, said sealing unitcomprising a pliable cupped washer, a supporting seat, and a resilientexpanding member seated within said cupped washer.

2. In a hose nozzle, a hollow body member, a hollow stem carried by saidbody member and having an exterior threaded section, a rotatable nozzleend adjustable onsaid threaded section, said nozzle end having anintegral tubular skirt member, and a sealing unit comprising a seatingmember, a cup-shaped fibrous washer, and an expansive resilient elementpositioned within the hollow of said cupped washer and adapted to forcethe wall of the latter outwardly against the adjacent surface of saidskirt member to efiect a liquid seal between the relative movable parts,and means formed on said skirt member adapted to engage with saidseating member to prevent total disassembly of said nozzle end from saidstem.

3. In a hose nozzle, a hollow body member having a reduced cylindricalneck at its forward end, a hollow stem comprising an intermediateenlarged exterior threaded section and a reduced smooth section defininga shoulder therebetween, a nozzle end axially adjustable with thethreaded section of said stem and having a rearwardly extending skirtportion normally surrounding said neck, and a sealing unit permanentlyclamped between the annular end of said neck and said stem shoulder andcooperating with said skirt portion to effect a liquid seal between therelative movable parts.

4. A hose nozzle defined as by claim 3, wherein said sealing unitcomprises a rigid seating Washer, a pliable cupped washer restingagainst said seating washer, and a retaining ring seating in the base ofsaid cupped washer and having a series of resilient fingers for holdingthe upstanding Wall of said cupped washer in liquid tight engagementagainst the inner surface of said skirt.

5. In a hose nozzle, a body member having a relatively long shankterminating with an inwardly formed flange and a forwardly extendingtubular neck, a hollow stem having an intermediate enlarged threadedsection and a reduced rear portion defining an abutment shouldertherebetween, the rear portion adapted to be telescoped into saidtubular neck and to initially extend beyond the inner flange wall ofsaid body, an adjustable nozzle engaging with the threaded section ofsaid stem, said nozzle having a cylindrical skirt portion surroundingthe neck of said body and designed to be substantially in cylindricalalinement With the adjacent end of said body, a sealing unit fittedabout said reduced rear portion and having cooperative engagement withthe interior of said skirt to efiect a liquid tight seal between therelative movable parts, said unit adapted to be tightly clamped betweenthe abutment shoulder and the annular end of the tubular neck and heldin permanent assembly by having the initially extended end of saidreduced portion formed over against the body flange.

6. In a hose nozzle, a body member, a stem attached to said body member,a sealing element comprising a pliable cupped washer permanently clampedbetween said body and said stem, a nozzle end adjustably mounted on saidstem, said nozzle end having an extended skirt portion adapted to extendback around said cupped washer, the pliable wall of said washer adaptedto be forced outwardly against said skirt coincident with the forceexerted by liquid pressure tending to leak past the relatively movablesurfaces.

ALBERT C. LUSHER. DONALD L. SPENDER.

